package com.imooc.api.interceptors;

import com.imooc.enums.UserStatus;
import com.imooc.exception.GraceException;
import com.imooc.grace.result.ResponseStatusEnum;
import com.imooc.pojo.AppUser;
import com.imooc.utils.JsonUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.lang.Nullable;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Description : 用户激活状态检查拦截器
 * 发文章、修改文章、删除文章
 * 发表、查看评论等等
 * 这些接口都是需要用户激活后，才能操作
 * 否则提示用户前往【账号设置】去完善信息
 * @Author : YTY
 * @Date : 2020-11-29 08:17
 */
public class UserActiveInterceptor extends BaseInterceptor implements HandlerInterceptor {

    /**
     * 拦截请求，在访问Controller调用之前
     *
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String userId = request.getHeader("headerUserId");
        String userJson = redis.get(REDIS_USER_INFO + ":" + userId);
        AppUser user = null;
        if (StringUtils.isNotBlank(userJson)) {
            user = JsonUtils.jsonToPojo(userJson, AppUser.class);
        } else {
            GraceException.display(ResponseStatusEnum.UN_LOGIN);
            return false;
        }

        if (user.getActiveStatus() == null || !user.getActiveStatus().equals(UserStatus.ACTIVE.type)) {
            GraceException.display(ResponseStatusEnum.USER_INACTIVE_ERROR);
            return false;
        }

        /**
         * 判断是否放行
         * false：请求被拦截，被驳回，验证出现问题
         * true：请求在经过校验以后，OK，可以放行
         */
        return true;
    }

    /**
     * 请求访问Controller之后，渲染视图之前
     *
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     * @throws Exception
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception {

    }

    /**
     * 请求访问Controller之后，渲染视图之后
     *
     * @param request
     * @param response
     * @param handler
     * @param ex
     * @throws Exception
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {

    }
}
